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greenman100 posted:Your R6 made that HP at ~14-15k RPM. That's not practical in a jet pump. Down at 8k RPM, you were making 50HP. I looked up a dyno of an R6 and this is pretty much spot on.
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Sep 20, 2012 05:11
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greenman100 posted:Your R6 made that HP at ~14-15k RPM. That's not practical in a jet pump. Down at 8k RPM, you were making 50HP. 13k RPM. 12 years ago. With carbs. Don't be dense. ninja edit: yes, the redline is 15.5k RPM. Yes, it spun like hell to make that power.
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Sep 20, 2012 05:38
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sofullofhate posted:13k RPM. 12 years ago. With carbs. I think youre missing the point. You couldn't put your engine into that application and make that much power. That said I sold no less than 50 air to water intercoolers to a guy who fabbed turbo jetskis in Miami. They will put out more than 180HP.
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Sep 20, 2012 06:09
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Lord Gaga posted:I think youre missing the point. You couldn't put your engine into that application and make that much power. I'm not suggesting that 15.5k RPM is practical for a jetski. I'm suggesting that 12 years ago, a carbureted, factory stock engine made 200HP per litre, and that therefore it is not even remotely difficult to conceive of a tuned engine today making 180HP / litre in an RPM range useful for such an application.
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Sep 20, 2012 06:13
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sofullofhate posted:I'm not suggesting that 15.5k RPM is practical for a jetski. I'm suggesting that 12 years ago, a carbureted, factory stock engine made 200HP per litre, and that therefore it is not even remotely difficult to conceive of a tuned engine today making 180HP / litre in an RPM range useful for such an application. The old R6es made like 95hp. You're looking at SS build + race gas to make 120hp on a current one. The 2000ish R1s made like 128-130hp. What does a jetski rev to? BlackMK4 fucked around with this message at 06:21 on Sep 20, 2012 |
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Sep 20, 2012 06:19
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How do you keep the water out of the intake when you go over like that? Most skis have a killswitch that'll cut the motor when you go off, sure, but if you stay on?
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Sep 20, 2012 06:25
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BlackMK4 posted:The old R6es made like 95hp. You're looking at SS build + race gas to make 120hp on a current one. The 2000ish R1s made like 128-130hp. No more than 8k. Yamahas have reduction gears because the (4-stroke) engines rev to 11-12k. HP really isn't a practical measure in jet ski engines. It is quoted only because that's what people are used to
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Sep 20, 2012 06:50
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Beach Bum posted:How do you keep the water out of the intake when you go over like that? Most skis have a killswitch that'll cut the motor when you go off, sure, but if you stay on?
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Sep 20, 2012 06:52
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greenman100 posted:Your R6 made that HP at ~14-15k RPM. That's not practical in a jet pump. Down at 8k RPM, you were making 50HP. His R6 was also a 4-stroke. This is a 2-stroke. Built 125cc 2-strokes make ~50hp at 12-13k. 250 twins make 90hp. It's not at all unreasonable to expect 180hp at 8000rpm from a 1000cc 2-stroke motor.
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Sep 20, 2012 08:49
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BlackMK4 posted:The old R6es made like 95hp. You're looking at SS build + race gas to make 120hp on a current one. The 2000ish R1s made like 128-130hp.  Stock WHP when new. Look, I'm out of this derail, but my point stands. A sky-revving I4 is not the right answer for this application, but nobody should be loving surprised that a heavily modified skidoo is making this kind of power.
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Sep 20, 2012 16:37
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sofullofhate posted:Fuuuuuuuuuuuuuuck. That looks ridiculously fun! Um, my 06 R6 only made like 112 
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Sep 20, 2012 16:45
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You guys are ruining the awesome thread and the awesome jetski derail. Shut the gently caress up about non-exploding motorcycles.
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Sep 20, 2012 17:56
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Godholio posted:You guys are ruining the awesome thread and the awesome jetski derail. Shut the gently caress up about non-exploding motorcycles. ^
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Sep 20, 2012 18:05
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More failures! I think a rod bearing came apart on that one and pieces found their way into the topend.  Hey where did that screw from the reed cage go? Oh.   Little oops with a pump shaft.  
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Sep 20, 2012 18:23
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Something is wrong about that rod.... I think there's a stress crack in the gelcoat, bro.  Awesome crank damage:   Sometimes the rods hold up to hydrolocking. But something's gotta give.   Here's a personal favorite. Looks like the big end rod bearing likely let go and the rod broke.       [timg]http://i.imgur.com/0sXS1.jpg]/timg]  And finally, love this one. Happened a couple hundred miles north. It's a good reminder of why to wear safety lanyards. 
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Sep 20, 2012 19:03
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TotalLossBrain posted:Something is wrong about that rod.... Safety lanyards tend to get in the way of doing flip & hood tricks. But I love the photos of the blown Yami motors and that poor 550.    E: For content Mmmn water ingestion  
Diametunim fucked around with this message at 19:35 on Sep 20, 2012 |
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Sep 20, 2012 19:29
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That's Daniel Martin. Do you know him? He's got a real good shot at the Am title in Havasu in a couple weeks. I personally don't think lanyards get in the way of flips or any aerials. And nobody does hood tricks on aftermarket hulls and big motors.
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Sep 20, 2012 19:34
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TotalLossBrain posted:That's Daniel Martin. Do you know him? He's got a real good shot at the Am title in Havasu in a couple weeks. It's amazing how far he's come. E: I do hood tricks on AM hulls don't judge me  . E2: I pulled those 701 photos off of the X just for content. Don't have any photos of my motor mishaps unfortunately. Diametunim fucked around with this message at 19:42 on Sep 20, 2012 |
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Sep 20, 2012 19:38
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Are you a member on X-H20?
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Sep 20, 2012 19:42
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TotalLossBrain posted:Are you a member on X-H20? I am, although I usually lurk. Same name as on here though. Shoot me a PM over there so we don't clutter up this thread anymore.
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Sep 20, 2012 19:47
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Diametunim posted:I am, although I usually lurk. Same name as on here though. Move it to the Jetski thread. I want to hear more of this.
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Sep 20, 2012 19:57
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Sockington posted:Move it to the Jetski thread. I want to hear more of this. Are socks allowed on Jet skis?
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Sep 20, 2012 20:01
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Sockington will find a way to make a jetski rust.
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Sep 20, 2012 22:32
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Sep 21, 2012 16:47
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Here we go again! Reminds me of The Alien.
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Sep 21, 2012 16:49
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Nice 'hawk, man.
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Sep 21, 2012 16:51
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Hmmm, yes. Use dynamite. The whole shop is a write-off now. I'm sorry for your loss.
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Sep 21, 2012 17:00
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Sep 21, 2012 17:07
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That wheel does not have nearly enough bling to be classic Mr. T. It's more like the modern, gold-free Mr. T. 
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Sep 21, 2012 17:16
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How was this "deflated"
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Sep 21, 2012 17:16
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Please tell me his mandingo's just a little messy and that's not a piece. 
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Sep 21, 2012 17:19
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Ron Pauls Friend posted:How was this "deflated" 
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Sep 21, 2012 17:21
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"That's a pretty sweet looking offroad tread patter... that's not an offroad tire at all."
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Sep 21, 2012 19:39
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First thing that popped into my head: 
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Sep 22, 2012 06:11
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nmfree posted:First thing that popped into my head: Heh, pop. 
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Sep 22, 2012 09:13
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Keeping on the subject of tires.
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Sep 22, 2012 19:26
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If that was a drag tire, that would actually be a good look (sans the gaping holes in the sidewall).
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Sep 22, 2012 19:52
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A rust failure. Top is the swaybar I removed, bottom is a swaybar I just picked up. The links are supposed to push on the end.
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Sep 22, 2012 20:08
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Nitr0 posted:Keeping on the subject of tires. Drove underinflated until it popped?
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Sep 22, 2012 21:15
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https://www.youtube.com/watch?v=3LN6zSs0e-Q&t=23s
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Sep 22, 2012 22:53
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